Issue 22316. Don't propose to create invalid local variable.

pkg/analysis_server/test/services/correction/fix_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.correction.fix;
 
 import 'package:analysis_server/src/protocol.dart' hide AnalysisError;
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/local_memory_index.dart';
@@ skipping 904 matching lines @@
 class A {
   get test => null;
 
   main() {
     test;
   }
 }
 ''');
   }
 
+  void test_createLocalVariable_functionType_named() {
+    _indexTestUnit('''
+typedef MY_FUNCTION(int p);
+foo(MY_FUNCTION f) {}
+main() {
+  foo(bar);
+}
+''');
+    assertHasFix(FixKind.CREATE_LOCAL_VARIABLE, '''
+typedef MY_FUNCTION(int p);
+foo(MY_FUNCTION f) {}
+main() {
+  MY_FUNCTION bar;
+  foo(bar);
+}
+''');
+  }
+
+  void test_createLocalVariable_functionType_synthetic() {
+    _indexTestUnit('''
+foo(f(int p)) {}
+main() {
+  foo(bar);
+}
+''');
+    assertNoFix(FixKind.CREATE_LOCAL_VARIABLE);
+  }
+
   void test_createLocalVariable_read_typeAssignment() {
     _indexTestUnit('''
 main() {
   int a = test;
 }
 ''');
     assertHasFix(FixKind.CREATE_LOCAL_VARIABLE, '''
 main() {
   int test;
   int a = test;
@@ skipping 1878 matching lines @@
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 
   void _indexTestUnit(String code) {
     resolveTestUnit(code);
     index.indexUnit(context, testUnit);
   }
 }